Cut-off valve for pipes and spouts



Dec. 29, 1931. F. J. BULLOCK 1,838,656

CUT-OFF VALVE FOR PIPES AND SPOUTS Filed May 19, 1930 Patented Dec. 29, 1931" UNITED; ST TES PATE C FRED J'.. BULLOCK, F SHORTSVILLE, ,NIElW YORK, ASSIGNOR TO PAPEC M ACI-IINE COM- PANY, 0F SHOR'ISVILLE, NEW YORK; A CORPORATION OF NEW YORK our-ora VALVE ron PIPES AND srou'rs i 1ictabn m a y is,

This invention pertainsto' cut-off valves suitable for use in pipes andspouts for conveying or delivering granular or pulverulent materials. a V

"The ob ect of the invention is to produce a slmpleand inexpensivestructure, comprlsmg "only two pairs of parts, those of each pair beingfof 7 identical form and "dimensions, fthough differing iromtheparts oi the other 10 pair." This reduces to twoithe number of patterns or dies, templates,'etc.,'required for productionof parts, and the numberof different kinds of repair partsnecessary to'be kept in stock.

'By providingtwo valve slides ino-vable to ward and from their meeting line at the mid- 1 width of the central opening, the'efiective opening, when" less than thepossible maximum, willbe somewhat distant'from opposite 20.

wallsof the pipe or spout, thus permitting the material handled to' fall practically clear of the interior surface of the ,pipe; a-nd'conse- "quently lessening frictional contact therewith and tendency to lodge thereonand to clog the pipe or spout.

The construction is; such that one' person 7 can readily rapply; and remove the cut'ofi valve withtheaid of a few simple tools, and

structure and attachedpipe sections as assem-' in caseofnecessity, can do so with one hand,

assuming that bolts or tap screws'be applied to the registering holeswhich. connect the upper and lower .plates.

The structure may be made of any suitable material, and may be of cast or sheet metal,

though in practice I prefer to use the latter because of rapidity, cheapness, and 'ease of production incident thereto.

The preferred embodiment of the invention is illustrated inthe accompanying drawings, wherein: p

Fig' 1 is a, perspective view :showingthe several parts of the structure slightly sep:

arated, better to disclose their form andrelative arrangement}- r t Fig. 2, a longitudinal section through the E Fig. 3, a face elevation of the'samewith the end of the structure turned 90fro1ntheposi tionin which it is "6and7. I

- used.

i930; Serial No. 453,570.

"members, here represented as plates of sheet metal of suitable gage and dimensions, each having one longitudinal edge portion turned over and laid upon the body of the plate, pro- -Numerals 1 and 2 designate two identical ducing a raised rib or fold 4. Each oftlie plates '1 and 2 has a centrally located opening 3, of the form anddimensions of the interior of the pipe or spout for which the structure is designed, and near eachlongitudinal edge of the plate as folded, is aseries of holes 1 or slides 6 and 7. The ribs or folds 4 further serve as spacing elements to hold the bodies of platesll and 2 sufliciently apart to permit free movement of the valve plates or slides Each of the plates l and 2 is or provided with two lugs or ears 8 and 9 which, in the case of sheet metal plates, may conveniently be punched or cut from the plate by a suitable die or dies, and bent-outward from but made substantially parallel with, the face of the plate, as seen in FigsJl and 2,

further formed the end of each lug remote from the central opening 3 being left integral with the plate as best seen in Fig. 2.

Metallic piping such as here contemplated and shown in the drawings, is usually made in sections of standard lengths, and these sections are quite commonly provided with radially flanged collars 10 at oneor at both ends where it is desired to make secure connection between proximate sections, the collars being made fast to the piping in any convenient or usual way. Such collaredsection orsections of piping will be provided wherever the cut-off or Valve here described is to be and at least temporarily holding a collar or collars in place against plates 1 and 2, or elther ofthem, that the lugs 8 and 9 are provided.

It is for the purpose of positioning 7 For the purpose of receiving bolts, rivets, or other fastenings by which to secure the cutoff to one or to two pipe sections, the radial flange 11 of each collar is provided with at least one hold 5 on diametrically opposite sides, two being shown in the forward sideof the upper collar in Fig. 1. The several holes 5 are positioned to register with holes 5 of the plates 1 and 2, so that the fastenings may pass through corresponding holes in both plates, and one or both collars as one or more may be used.

It will be seen that by merely bringing one longitudinal edge of either plate 1 or 2' into contact with the exposed face of the proximate collar 10 and moving theplate laterally, the lugs 8 and 9 will be caused to pass over or under and to engage the flange of the collar, and draw and hold the face of the-plate against the outer face of the collar. In. this way the plate 1 or 2 will be held in proper position to receive the fastening bolts or rivets, and the proximate pipe sections (if two arebeing coupled) will be accurately alined.

The valve slides or plates Sand 7 are exact duplicates, and each is preferably of six-sided form or outline-,as seen inFig. 1, with a downwardly turned lip 12 at the inner end, and. a hand-hold 13 at the outer end, which maybe turned either upward or downward. It is shown turned downward in the drawings. Each slide or plate is of a width, to extend from the inner guiding edge of one fold L to the like edge of the opposite fold 4,. with clearance sufiicient to permit free; movement of the plates or slides, but affording as little space as practicable for lodgement of material handled. The slides are maintained of uniform width from their inner ends to apoint outward therefrom which will ensure a proper and complete covering of one-half of the central opening 3 of plates land 2,

but from such point they may be progressively narrowed to where the hand-hold 13 isformed, thus lightening the plate and avoiding waste of metal.

The several parts being constructed as above described, the lower plate 2. is placed in horizontal position, and the two valve plates or slides 6 and 7 are laid thereon. withone edge of each against the guide ribs 4:, 4, and advisably pushed inward to meet at the medial line of the opening 3. The upper plate 1 is then applied. to and alined with the lower one, bringing its rib into guiding relation to the-proximate edges of valve plates or slides 6. and 7. Bolts are then inserted in the holes of one plate and passed through or screwed into the registering holes of the second plate, according as the bolts are provided with nuts or are screwed into holesof the second plate tapped to receive the tap bolts. If rivets, as let, are applied instead of bolts, they will of course be headed at that end which is first passed through the holes.

As it is sometimes desirable to remove either the valve plates or slides 6 and 7 or the entire lower section of the valve holder formed by the plates 1 and 2, bolts may be used in preference to rivets. Bolts possess the advantage that they may be screwed into or out of the nuts or internally threaded holes by a simple screw driver held and manipulated by onehand leaving the other hand of the workman free toshift belts,.open or close a switch, set a rheostat, or perform like operations' at the machine to which the pipe or spout is applied. If it be desired merely to remove the valve plates 6 and 7 the bolts may be backed off suificiently tolet the lower plate fall away from the upper plate a distance slightly in excess of the projection of the lugs 12 from the face of the slides, whereupon the slides may be'dra wn outward and lifted to carrythe lugs clear of the central opening of the lower plate. If it be desired to remove the whole lower section of the valve guide or casing as well as the valve plates, the bolts may be completely freed from the nuts or the threaded holes 5, letting plate 2 down to any convenient stop or rest positioned to catch. it.

To ensure free movement of the plates or slides 6 and 7-when the parts'are assembled. and secured together, said slides may be made of material of slightly thinner gage than the plates 1 and 2, or made initially of like gage. and slightly ground on one face to give the necessary clearance.

'The fastenings appearing in Fig. 2 are those located near the ends of plates 1 and 2, which lie outside the guiding edges of plates G and 7', as will be noted on reference to Fig. 3.

It is of course practicable to form the ribs 4 from separate strips of metal of proper length and width, laid upon or applied to the plates. 1 and 2 or to both longitudinal edges of either plate,.where they willbe held by the bolts or fastenings passing, through registering holes,.as'un.der the preferred construction above described, The folded form of plate avoids any slippage or displacement of the ribs in centering the parts, permits theholes of therib and body of the plate to be simultaneously punched. or drilled, and ensures perfect alinement of the holes of the body and rib. For these reasons, among others,

the folded construction is deemed best.

Though designed primarily for use in pipes or spouts of so-called roughage grinders ',.the device may be applied to pipes and delivery spouts generally, or in other words, is not restricted to any particular field.

I. claim 1. A cut-0E valve for pipes, comprising a frame or body composed of two identical plates, each of said plates provided with a longitudinal rib at one edge and with a central opening; two identical slides or valvemembers movable between the opposed faces 7 of the ribbed plates with their longitudinal edges lying between and guided by the ribs of the plates; and fastenings for securing the plates of the frame one to the other.

' 2. In combination with a radially flanged collar, a cut-off Valve comprising two identical plates each provided along one longitudinal edge with a guiding rib projecting from its face and with a central opening registering with the collar; and a pair of identical slides movable between the opposed faces of said plates and between the ribs thereof, the collar flange and the plates being provided with registering holes to receive fastenings whereby the plates and the collars may be secured together.

3. In combination with two pipe sections each provided at one end with a radially flanged collar, a cut-off valve having a frame composed of two'identical plates each having an opening registering with said pipes, and a rib projecting facewise from'the plate along one longitudinal edge; two slides in terposed between said plates and having their longitudinal edges in proximity to the ribs vof said plates; and fastenings passing through registering holes in the flanges of the collars and in the frame plates, and serving to unite said parts.

4. In combination with a radially flanged pipe collar, a cut-off valve comprising upper and lower frame plates each provided with an opening registering with the pipe, and having a longitudinal guiding rib near one edge and lugs parallel with but set away from the outer face of the plate to overlap the collar flange; identical slides interposed between the frame plates and movable between the ribs thereof; and fastenings passing through the collar flange and the frame plates, and serving to bind the same together.

5. In combination with a pair'of pipe sections provided at their proximate ends with radially flanged collars, a cut-off valve comprising two frame plates provided on their faces each with a longitudinal rib and on their outer faces with lugs to'overlie and engage the flange of the collar in contact'with said faces; two slides interposed and movable between said frame plates and between the ribs thereof; and fastenings passing through the collar flanges and through the frame plates and serving to bind the same together.

6. A cut-ofl valve for pipes and spouts, comprising a frame composed of two identical plates each having on one face a guiding rib; and a pair of slides placed and movable between the proximate faces of the frame plates and between the guiding ribs of the respective plates, said slides being provided at their inner ends with projecting lips to limit their outward movement.

In testimony whereof I have'signed my 7 name to thisspecification.

FRED J. BULLOCK. 

